Elastic or expansible paving-joint.



W. J'.. MOELLER.

ELASTIC 0R EXPANSIBLE PAVINGJOINT.

APPLlcATloN FILED luLY 5.1912.

Patented Mar. 27, 1917.

WILLIAM J. .IVIOELLER, OF WYOMING,

OHIO, ASSIGNOR TO THE PHILIP CAREY MANU- ELASTIC OR EXPANSIBLE PVING-J'OINT.

Application filed July 5,

To all whom t may concern.'

Be it known that I, W ILLIAM J. `MOELLER, a citizen ofthe United States, residing at Wyoming, in the county of Hamilton and State of Ohio, have'invented certain new and useful Improvements in Elastic lor Expansible Paving-Joints, of which the following is a specification.`

y invention relates to means for providing for the contraction and expansion of street paving.

The object of my invention is to provide simple, convenient, economical and eilcient means for taking up the-contraction and eX- pansion in street pavements formed of brick, granite blocks, and the like and to form the same as a permanent part of the pavement while the pavement is being made.

My invention consists in the construction, combination and arrangement of parts and in the process as herein set forth and claimed.

Pavements consisting of brick, granite blocks, wood blocks and the like will contract and expand inaccordance with the change of temperature. When the temperature is warm the material comprising the pavement will expand, and when the temperature isy colder the material will contract. It, therefore, becomes necessary to place expansible material in said pavement at i11- ter-valsto compensate for this contraction and expansion the pavement. It has heretofore been necessary, in building the pavement, to place thin strips of wood-betweenthe layers of granite or brick, and after the y position,'to withdraw the boards and fill the invention.: j

' Ilgure l 1s a perspective View representlng;

space thus formed, with coal tar pitch, and other materials. In the drawings, which serve to illustrate the construction, application and use of my a paved street .having my elastic paving joint ypermanently embedded therein between'thel' I paving blocks and the curb, and at intervals 'transversely of the pavement and extending across the street between the curbs;

\ Fig. 2 is a perspective viewupon ,a larger scale showing a section of elastic paving joint' and a row of paving blocks abutting it upon one side; and V Fig. 3 is a perspectivefview of a portion of one of my elastic paving joints showing Specification of Letters Patent.

of the material comprising` same are placed inl Patented Mar. et, mit.

1912. Serial No. 707,773.

one of the layers o saura rolled back.

My invention comprises strips of material composed of a plurality of layers of heavy ysoft felt 1, each of which is, thoroughly saturated or impregnated with asphalt compound 2 in such quantity as is required, the same depending on the climatic conditions. It is desirable that the felt besaturated to an eX- tent which will not cause the asphalt compound to run in hot weather. When so saturated it will not crack in coldtweather. The felt is first saturated, as stated, and a plurality of layers of the saturated material l are secured together by layers of asphalt 7 of suflicient thickness to withstand the vari- .ous conditions of temperature or climatic conditions, as above set forth.

The strips of material thus formed are preferably about one-half inch thick and of a Width to correspond with the vertical thickness of the granite block or the brick 3 composing the pavement, and may be formed in any length desired. These strips 4 may be inserted Aat intervals of fifty feet, more or less,.depending on the amount of contraction and expansion necessary to be compensated for, and may extend from curb 5 to curb 6 or from the street car rail to the curb as the case may be in one or more sections, asdesired, or they may be introduced at still other places to constitute elastic joints or fillers between adjacent parts ofthe pave- Iment. For taking up the lateral contraction and expansion ofthe pavement I place these Istrips lengthwise adjacent the curb and lay 4the brick or granite pavement blocks 3 against the same. These strips 4 when once v placed in position, become a permanent part fof the pavement and it is unnecessary to remove them. Thus the expense of placing a temporary board in position to forma space for the coal tar pitch, removing the same .and Aiilling it with coal tar pitch, is dispensed with. At the same time,a,more elastic, expansible, firm, secure, solid and substantial structure is permanently secured in place, and any lcracks orcrevices between it and the .adjacent pavementv or curb are filled with 'coal tar pitch suchV as is used between the severalblocks of paving.

The uniting of the lseveral strips of felt or 'other dense matted lmaterial together, and the impregnation or saturation of the t the joint or filler vious methods.

same, produces as a whole, a solid, tough, relatively rigid article of block-like or board character, well adapted to perform the functions for which the same is intended. The addition of the intermediate layers or walls of asphalt between the felt strips not only assists in preserving the otherwise impregnated strips by making them water-proof, etc., but the distinct Walls of asphalt permit a substantial amount of yield or play of the strips \face-wise` relative to each other so that they may adjust themselves when the member as a whole is bent or deflected in a face-Wise direction, in keeping With the changing relations of the blocks or parts of the pavement adjoining the elastic joint or filler. Another feature of advantage incident to the simple character of the filler or joint herein disclosed resides in the fact that there are no separate surface particlesv or friable substances capable of being rubbed off under the frictional action of parts adjoining the faces of the joint, but

the faces of the joint or filler itself are eX- Y posed in a Way to present integral portions of the body to the adjacent faces of the paving blocks, etc., and by reason of the adhesive character of the joint,-incident to its impregnation,the exposed surfaces of the joint and the blocks, etc., will adhere, to the end that the pavement members are eii'ectually bonded together throughout and prevented from displacement. j

The asphalt used in this structure i-s so tempered that it is not affected by weather conditions, being free from moisture, ash

and other impurities, and is especially adapted for work underground. The felt is completely protected by this indestructible asphalt and insures a permanent street paving joint. It makes a compact board which is easily handled and is a great saving in time and labor and the cost of material in the construct-iomof the joint in accordance with my invention as An advantage of my construction of paving joint is-that it will not run like the pitch in summer, or crack like pitch in winter, nor Will it run to the gutter on arched streets like coal tar pitch.

Finally, this paving joint is superior to others because it makes a more lasting and satisfactory street..` I

compared with pref lpresenting a tough non-frayable wearing edge. A

2. An expansion joint for street pavements comprising a board composed of a body of soft felt impregnated with an asphalt compound and compressed into arelatively hard solid condition to render the same capable of allowing for heavy pressures without fracture, and presenting a tough non-frayable wearing edge.

3. Incombination with a street pavement formed of brick or equivalent material, an

' elastic joint permanently embedded'in said pavement comprising a plurality of flat strips of matted expansible material saturated with asphalt compound, and having a f distinct flat strip of asphalt forming a body of considerable thickness secured between andy binding each two adjacent strips of matted expansible material, said oint being permanently disposed edgewise inI said pavement, substantially as set forth and for the purposes specified.

4. An expansion joint for street pavements comprising a board composed of a body of soft material impregnated with an asphalt compound and compressed' into a relatively hard solid condition to render the same capable of allowing for heavy pressures without fracture.

5. An expansion Ajoint for street pavements, comprising a board composed of a .supporting layer, and a layer of asphalt compound compressed together into a relatively hard solid condition to render the same capable of allowing for heavy pressures without fracture.

WILLIAM J. MOELLER.

- Witnesses: Y JAMES N. RAMSEY, BERNARDNF. KLEM. 

